Home / 55,007.76-75,909.48-31,130.58

Finding the Fourth Proportional to 55,007.76, 75,909.48 and 31,130.58

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Solution

The fourth proportional to 55,007.76, 75,909.48 and 31,130.58 is: 42,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,007.76 : 75,909.48 = 31,130.58 : x
  2. Step 2: Convert to fraction form
    55,007.76/75,909.48 = 31,130.58/x
  3. Step 3: Cross multiply
    55,007.76x = 75,909.48 × 31,130.58
  4. Step 4: Simplify right side
    55,007.76x = 2,363,106,139.90
  5. Step 5: Solve for x
    x = 2,363,106,139.90/55,007.76
  6. Step 6: Final answer
    x = 42,959.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.