Home / 99,528.18-137,347.50-56,507.28

Finding the Fourth Proportional to 99,528.18, 137,347.50 and 56,507.28

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Solution

The fourth proportional to 99,528.18, 137,347.50 and 56,507.28 is: 77,979.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,528.18 : 137,347.50 = 56,507.28 : x
  2. Step 2: Convert to fraction form
    99,528.18/137,347.50 = 56,507.28/x
  3. Step 3: Cross multiply
    99,528.18x = 137,347.50 × 56,507.28
  4. Step 4: Simplify right side
    99,528.18x = 7,761,133,639.80
  5. Step 5: Solve for x
    x = 7,761,133,639.80/99,528.18
  6. Step 6: Final answer
    x = 77,979.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.