Home / 81,742.65-112,807.70-45,931.93

Finding the Fourth Proportional to 81,742.65, 112,807.70 and 45,931.93

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Solution

The fourth proportional to 81,742.65, 112,807.70 and 45,931.93 is: 63,387.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,742.65 : 112,807.70 = 45,931.93 : x
  2. Step 2: Convert to fraction form
    81,742.65/112,807.70 = 45,931.93/x
  3. Step 3: Cross multiply
    81,742.65x = 112,807.70 × 45,931.93
  4. Step 4: Simplify right side
    81,742.65x = 5,181,475,379.86
  5. Step 5: Solve for x
    x = 5,181,475,379.86/81,742.65
  6. Step 6: Final answer
    x = 63,387.66

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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.