Home / 77,023.60-115,535.40-47,345.20

Finding the Fourth Proportional to 77,023.60, 115,535.40 and 47,345.20

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Solution

The fourth proportional to 77,023.60, 115,535.40 and 47,345.20 is: 71,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,023.60 : 115,535.40 = 47,345.20 : x
  2. Step 2: Convert to fraction form
    77,023.60/115,535.40 = 47,345.20/x
  3. Step 3: Cross multiply
    77,023.60x = 115,535.40 × 47,345.20
  4. Step 4: Simplify right side
    77,023.60x = 5,470,046,620.08
  5. Step 5: Solve for x
    x = 5,470,046,620.08/77,023.60
  6. Step 6: Final answer
    x = 71,017.80

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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.