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Finding the Fourth Proportional to 66,312,006.40, 99,468,009.60 and 60,572,443.60

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Solution

The fourth proportional to 66,312,006.40, 99,468,009.60 and 60,572,443.60 is: 90,858,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,312,006.40 : 99,468,009.60 = 60,572,443.60 : x
  2. Step 2: Convert to fraction form
    66,312,006.40/99,468,009.60 = 60,572,443.60/x
  3. Step 3: Cross multiply
    66,312,006.40x = 99,468,009.60 × 60,572,443.60
  4. Step 4: Simplify right side
    66,312,006.40x = 6,025,020,401,500,258
  5. Step 5: Solve for x
    x = 6,025,020,401,500,258/66,312,006.40
  6. Step 6: Final answer
    x = 90,858,665.40

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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.