Home / 99,586.53-137,428.02-54,266.40

Finding the Fourth Proportional to 99,586.53, 137,428.02 and 54,266.40

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Solution

The fourth proportional to 99,586.53, 137,428.02 and 54,266.40 is: 74,886.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,586.53 : 137,428.02 = 54,266.40 : x
  2. Step 2: Convert to fraction form
    99,586.53/137,428.02 = 54,266.40/x
  3. Step 3: Cross multiply
    99,586.53x = 137,428.02 × 54,266.40
  4. Step 4: Simplify right side
    99,586.53x = 7,457,723,904.53
  5. Step 5: Solve for x
    x = 7,457,723,904.53/99,586.53
  6. Step 6: Final answer
    x = 74,886.87

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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.