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Finding the Fourth Proportional to 98,319.68, 135,680.64 and 55,875.68

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Solution

The fourth proportional to 98,319.68, 135,680.64 and 55,875.68 is: 77,108.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,319.68 : 135,680.64 = 55,875.68 : x
  2. Step 2: Convert to fraction form
    98,319.68/135,680.64 = 55,875.68/x
  3. Step 3: Cross multiply
    98,319.68x = 135,680.64 × 55,875.68
  4. Step 4: Simplify right side
    98,319.68x = 7,581,248,022.84
  5. Step 5: Solve for x
    x = 7,581,248,022.84/98,319.68
  6. Step 6: Final answer
    x = 77,108.14

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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.