Home / 78,430.74-117,614.97-28,483.59

Finding the Fourth Proportional to 78,430.74, 117,614.97 and 28,483.59

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Solution

The fourth proportional to 78,430.74, 117,614.97 and 28,483.59 is: 42,714.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,430.74 : 117,614.97 = 28,483.59 : x
  2. Step 2: Convert to fraction form
    78,430.74/117,614.97 = 28,483.59/x
  3. Step 3: Cross multiply
    78,430.74x = 117,614.97 × 28,483.59
  4. Step 4: Simplify right side
    78,430.74x = 3,350,096,583.34
  5. Step 5: Solve for x
    x = 3,350,096,583.34/78,430.74
  6. Step 6: Final answer
    x = 42,714.08

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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.