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Finding the Fourth Proportional to 99,528, 137,349.60 and 54,816.96

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Solution

The fourth proportional to 99,528, 137,349.60 and 54,816.96 is: 75,647.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,528 : 137,349.60 = 54,816.96 : x
  2. Step 2: Convert to fraction form
    99,528/137,349.60 = 54,816.96/x
  3. Step 3: Cross multiply
    99,528x = 137,349.60 × 54,816.96
  4. Step 4: Simplify right side
    99,528x = 7,529,087,529.22
  5. Step 5: Solve for x
    x = 7,529,087,529.22/99,528
  6. Step 6: Final answer
    x = 75,647.93

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1.5x scale

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.