Home / 92,721.60-127,946.40-56,913.12

Finding the Fourth Proportional to 92,721.60, 127,946.40 and 56,913.12

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Solution

The fourth proportional to 92,721.60, 127,946.40 and 56,913.12 is: 78,534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,721.60 : 127,946.40 = 56,913.12 : x
  2. Step 2: Convert to fraction form
    92,721.60/127,946.40 = 56,913.12/x
  3. Step 3: Cross multiply
    92,721.60x = 127,946.40 × 56,913.12
  4. Step 4: Simplify right side
    92,721.60x = 7,281,828,816.77
  5. Step 5: Solve for x
    x = 7,281,828,816.77/92,721.60
  6. Step 6: Final answer
    x = 78,534.33

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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.