Home / 51,123.36-70,550.80-28,155.76

Finding the Fourth Proportional to 51,123.36, 70,550.80 and 28,155.76

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Solution

The fourth proportional to 51,123.36, 70,550.80 and 28,155.76 is: 38,855.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,123.36 : 70,550.80 = 28,155.76 : x
  2. Step 2: Convert to fraction form
    51,123.36/70,550.80 = 28,155.76/x
  3. Step 3: Cross multiply
    51,123.36x = 70,550.80 × 28,155.76
  4. Step 4: Simplify right side
    51,123.36x = 1,986,411,392.61
  5. Step 5: Solve for x
    x = 1,986,411,392.61/51,123.36
  6. Step 6: Final answer
    x = 38,855.26

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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.