Home / 91,312.69-136,959.28-43,269.70

Finding the Fourth Proportional to 91,312.69, 136,959.28 and 43,269.70

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Solution

The fourth proportional to 91,312.69, 136,959.28 and 43,269.70 is: 64,899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,312.69 : 136,959.28 = 43,269.70 : x
  2. Step 2: Convert to fraction form
    91,312.69/136,959.28 = 43,269.70/x
  3. Step 3: Cross multiply
    91,312.69x = 136,959.28 × 43,269.70
  4. Step 4: Simplify right side
    91,312.69x = 5,926,186,957.82
  5. Step 5: Solve for x
    x = 5,926,186,957.82/91,312.69
  6. Step 6: Final answer
    x = 64,899.93

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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.