Home / 85,682,275.79-128,527,547.13-28,173,273.71

Finding the Fourth Proportional to 85,682,275.79, 128,527,547.13 and 28,173,273.71

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Solution

The fourth proportional to 85,682,275.79, 128,527,547.13 and 28,173,273.71 is: 42,261,269.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,682,275.79 : 128,527,547.13 = 28,173,273.71 : x
  2. Step 2: Convert to fraction form
    85,682,275.79/128,527,547.13 = 28,173,273.71/x
  3. Step 3: Cross multiply
    85,682,275.79x = 128,527,547.13 × 28,173,273.71
  4. Step 4: Simplify right side
    85,682,275.79x = 3,621,041,763,925,777
  5. Step 5: Solve for x
    x = 3,621,041,763,925,777/85,682,275.79
  6. Step 6: Final answer
    x = 42,261,269.68

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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.