Home / 79,030.40-118,353.60-42,012.80

Finding the Fourth Proportional to 79,030.40, 118,353.60 and 42,012.80

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Solution

The fourth proportional to 79,030.40, 118,353.60 and 42,012.80 is: 62,917.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,030.40 : 118,353.60 = 42,012.80 : x
  2. Step 2: Convert to fraction form
    79,030.40/118,353.60 = 42,012.80/x
  3. Step 3: Cross multiply
    79,030.40x = 118,353.60 × 42,012.80
  4. Step 4: Simplify right side
    79,030.40x = 4,972,366,126.08
  5. Step 5: Solve for x
    x = 4,972,366,126.08/79,030.40
  6. Step 6: Final answer
    x = 62,917.13

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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.