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Finding the Fourth Proportional to 105,578.12, 145,746.42 and 62,554.76

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Solution

The fourth proportional to 105,578.12, 145,746.42 and 62,554.76 is: 86,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,578.12 : 145,746.42 = 62,554.76 : x
  2. Step 2: Convert to fraction form
    105,578.12/145,746.42 = 62,554.76/x
  3. Step 3: Cross multiply
    105,578.12x = 145,746.42 × 62,554.76
  4. Step 4: Simplify right side
    105,578.12x = 9,117,132,323.96
  5. Step 5: Solve for x
    x = 9,117,132,323.96/105,578.12
  6. Step 6: Final answer
    x = 86,354.37

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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.