Home / 85,357,545.84-128,042,015.64-30,018,739.68

Finding the Fourth Proportional to 85,357,545.84, 128,042,015.64 and 30,018,739.68

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Solution

The fourth proportional to 85,357,545.84, 128,042,015.64 and 30,018,739.68 is: 45,030,113.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,357,545.84 : 128,042,015.64 = 30,018,739.68 : x
  2. Step 2: Convert to fraction form
    85,357,545.84/128,042,015.64 = 30,018,739.68/x
  3. Step 3: Cross multiply
    85,357,545.84x = 128,042,015.64 × 30,018,739.68
  4. Step 4: Simplify right side
    85,357,545.84x = 3,843,659,935,599,648.50
  5. Step 5: Solve for x
    x = 3,843,659,935,599,648.50/85,357,545.84
  6. Step 6: Final answer
    x = 45,030,113.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.