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Finding the Fourth Proportional to 57,985,887.10, 86,978,830.65 and 25,621,130.20

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Solution

The fourth proportional to 57,985,887.10, 86,978,830.65 and 25,621,130.20 is: 38,431,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,985,887.10 : 86,978,830.65 = 25,621,130.20 : x
  2. Step 2: Convert to fraction form
    57,985,887.10/86,978,830.65 = 25,621,130.20/x
  3. Step 3: Cross multiply
    57,985,887.10x = 86,978,830.65 × 25,621,130.20
  4. Step 4: Simplify right side
    57,985,887.10x = 2,228,495,944,727,400.75
  5. Step 5: Solve for x
    x = 2,228,495,944,727,400.75/57,985,887.10
  6. Step 6: Final answer
    x = 38,431,695.30

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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.