Home / 86,851,375.38-130,281,253.02-28,557,762.78

Finding the Fourth Proportional to 86,851,375.38, 130,281,253.02 and 28,557,762.78

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Solution

The fourth proportional to 86,851,375.38, 130,281,253.02 and 28,557,762.78 is: 42,838,021.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,851,375.38 : 130,281,253.02 = 28,557,762.78 : x
  2. Step 2: Convert to fraction form
    86,851,375.38/130,281,253.02 = 28,557,762.78/x
  3. Step 3: Cross multiply
    86,851,375.38x = 130,281,253.02 × 28,557,762.78
  4. Step 4: Simplify right side
    86,851,375.38x = 3,720,541,118,426,318.50
  5. Step 5: Solve for x
    x = 3,720,541,118,426,318.50/86,851,375.38
  6. Step 6: Final answer
    x = 42,838,021.88

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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.