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Finding the Fourth Proportional to 42,602,794.80, 63,869,200.20 and 18,360,337.20

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Solution

The fourth proportional to 42,602,794.80, 63,869,200.20 and 18,360,337.20 is: 27,525,425.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,602,794.80 : 63,869,200.20 = 18,360,337.20 : x
  2. Step 2: Convert to fraction form
    42,602,794.80/63,869,200.20 = 18,360,337.20/x
  3. Step 3: Cross multiply
    42,602,794.80x = 63,869,200.20 × 18,360,337.20
  4. Step 4: Simplify right side
    42,602,794.80x = 1,172,660,052,366,307.50
  5. Step 5: Solve for x
    x = 1,172,660,052,366,307.50/42,602,794.80
  6. Step 6: Final answer
    x = 27,525,425.45

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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.