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Finding the Fourth Proportional to 79,047.76, 118,008.16 and 76,279.18

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Solution

The fourth proportional to 79,047.76, 118,008.16 and 76,279.18 is: 113,875.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,047.76 : 118,008.16 = 76,279.18 : x
  2. Step 2: Convert to fraction form
    79,047.76/118,008.16 = 76,279.18/x
  3. Step 3: Cross multiply
    79,047.76x = 118,008.16 × 76,279.18
  4. Step 4: Simplify right side
    79,047.76x = 9,001,565,678.11
  5. Step 5: Solve for x
    x = 9,001,565,678.11/79,047.76
  6. Step 6: Final answer
    x = 113,875.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.