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Finding the Fourth Proportional to 72,536,807.80, 108,734,352.90 and 64,884,057.40

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Solution

The fourth proportional to 72,536,807.80, 108,734,352.90 and 64,884,057.40 is: 97,262,703.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,536,807.80 : 108,734,352.90 = 64,884,057.40 : x
  2. Step 2: Convert to fraction form
    72,536,807.80/108,734,352.90 = 64,884,057.40/x
  3. Step 3: Cross multiply
    72,536,807.80x = 108,734,352.90 × 64,884,057.40
  4. Step 4: Simplify right side
    72,536,807.80x = 7,055,125,994,915,457
  5. Step 5: Solve for x
    x = 7,055,125,994,915,457/72,536,807.80
  6. Step 6: Final answer
    x = 97,262,703.02

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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.