Home / 72,172,015.60-99,598,674-39,133,379.20

Finding the Fourth Proportional to 72,172,015.60, 99,598,674 and 39,133,379.20

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Solution

The fourth proportional to 72,172,015.60, 99,598,674 and 39,133,379.20 is: 54,004,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,172,015.60 : 99,598,674 = 39,133,379.20 : x
  2. Step 2: Convert to fraction form
    72,172,015.60/99,598,674 = 39,133,379.20/x
  3. Step 3: Cross multiply
    72,172,015.60x = 99,598,674 × 39,133,379.20
  4. Step 4: Simplify right side
    72,172,015.60x = 3,897,632,677,459,181
  5. Step 5: Solve for x
    x = 3,897,632,677,459,181/72,172,015.60
  6. Step 6: Final answer
    x = 54,004,764.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.