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Finding the Fourth Proportional to 78,019.68, 116,959.68 and 28,088.04

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Solution

The fourth proportional to 78,019.68, 116,959.68 and 28,088.04 is: 42,106.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,019.68 : 116,959.68 = 28,088.04 : x
  2. Step 2: Convert to fraction form
    78,019.68/116,959.68 = 28,088.04/x
  3. Step 3: Cross multiply
    78,019.68x = 116,959.68 × 28,088.04
  4. Step 4: Simplify right side
    78,019.68x = 3,285,168,170.23
  5. Step 5: Solve for x
    x = 3,285,168,170.23/78,019.68
  6. Step 6: Final answer
    x = 42,106.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.