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Finding the Fourth Proportional to 105,473.34, 145,498.68 and 62,428.32

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Solution

The fourth proportional to 105,473.34, 145,498.68 and 62,428.32 is: 86,118.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,473.34 : 145,498.68 = 62,428.32 : x
  2. Step 2: Convert to fraction form
    105,473.34/145,498.68 = 62,428.32/x
  3. Step 3: Cross multiply
    105,473.34x = 145,498.68 × 62,428.32
  4. Step 4: Simplify right side
    105,473.34x = 9,083,238,154.62
  5. Step 5: Solve for x
    x = 9,083,238,154.62/105,473.34
  6. Step 6: Final answer
    x = 86,118.81

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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.