Home / 85,968,502.20-128,952,753.30-55,357,500.60

Finding the Fourth Proportional to 85,968,502.20, 128,952,753.30 and 55,357,500.60

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Solution

The fourth proportional to 85,968,502.20, 128,952,753.30 and 55,357,500.60 is: 83,036,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,502.20 : 128,952,753.30 = 55,357,500.60 : x
  2. Step 2: Convert to fraction form
    85,968,502.20/128,952,753.30 = 55,357,500.60/x
  3. Step 3: Cross multiply
    85,968,502.20x = 128,952,753.30 × 55,357,500.60
  4. Step 4: Simplify right side
    85,968,502.20x = 7,138,502,118,176,402
  5. Step 5: Solve for x
    x = 7,138,502,118,176,402/85,968,502.20
  6. Step 6: Final answer
    x = 83,036,250.90

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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.