Home / 78,210.36-117,332.62-28,285.25

Finding the Fourth Proportional to 78,210.36, 117,332.62 and 28,285.25

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Solution

The fourth proportional to 78,210.36, 117,332.62 and 28,285.25 is: 42,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,210.36 : 117,332.62 = 28,285.25 : x
  2. Step 2: Convert to fraction form
    78,210.36/117,332.62 = 28,285.25/x
  3. Step 3: Cross multiply
    78,210.36x = 117,332.62 × 28,285.25
  4. Step 4: Simplify right side
    78,210.36x = 3,318,781,761.77
  5. Step 5: Solve for x
    x = 3,318,781,761.77/78,210.36
  6. Step 6: Final answer
    x = 42,434.05

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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.