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Finding the Fourth Proportional to 66,459,955.20, 99,703,411.20 and 37,719,859.20

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Solution

The fourth proportional to 66,459,955.20, 99,703,411.20 and 37,719,859.20 is: 56,587,438.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459,955.20 : 99,703,411.20 = 37,719,859.20 : x
  2. Step 2: Convert to fraction form
    66,459,955.20/99,703,411.20 = 37,719,859.20/x
  3. Step 3: Cross multiply
    66,459,955.20x = 99,703,411.20 × 37,719,859.20
  4. Step 4: Simplify right side
    66,459,955.20x = 3,760,798,632,223,703.50
  5. Step 5: Solve for x
    x = 3,760,798,632,223,703.50/66,459,955.20
  6. Step 6: Final answer
    x = 56,587,438.57

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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.