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Finding the Fourth Proportional to 61,264.93, 84,555.62 and 42,128.68

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Solution

The fourth proportional to 61,264.93, 84,555.62 and 42,128.68 is: 58,144.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,264.93 : 84,555.62 = 42,128.68 : x
  2. Step 2: Convert to fraction form
    61,264.93/84,555.62 = 42,128.68/x
  3. Step 3: Cross multiply
    61,264.93x = 84,555.62 × 42,128.68
  4. Step 4: Simplify right side
    61,264.93x = 3,562,216,657.18
  5. Step 5: Solve for x
    x = 3,562,216,657.18/61,264.93
  6. Step 6: Final answer
    x = 58,144.47

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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.