Home / 99,772.28-137,688.96-56,750.66

Finding the Fourth Proportional to 99,772.28, 137,688.96 and 56,750.66

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Solution

The fourth proportional to 99,772.28, 137,688.96 and 56,750.66 is: 78,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,772.28 : 137,688.96 = 56,750.66 : x
  2. Step 2: Convert to fraction form
    99,772.28/137,688.96 = 56,750.66/x
  3. Step 3: Cross multiply
    99,772.28x = 137,688.96 × 56,750.66
  4. Step 4: Simplify right side
    99,772.28x = 7,813,939,354.71
  5. Step 5: Solve for x
    x = 7,813,939,354.71/99,772.28
  6. Step 6: Final answer
    x = 78,317.74

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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.