Home / 80,746.40-121,078.88-47,023.31

Finding the Fourth Proportional to 80,746.40, 121,078.88 and 47,023.31

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Solution

The fourth proportional to 80,746.40, 121,078.88 and 47,023.31 is: 70,511.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,746.40 : 121,078.88 = 47,023.31 : x
  2. Step 2: Convert to fraction form
    80,746.40/121,078.88 = 47,023.31/x
  3. Step 3: Cross multiply
    80,746.40x = 121,078.88 × 47,023.31
  4. Step 4: Simplify right side
    80,746.40x = 5,693,528,868.18
  5. Step 5: Solve for x
    x = 5,693,528,868.18/80,746.40
  6. Step 6: Final answer
    x = 70,511.25

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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.