Home / 90,953.34-125,455.47-56,902.74

Finding the Fourth Proportional to 90,953.34, 125,455.47 and 56,902.74

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Solution

The fourth proportional to 90,953.34, 125,455.47 and 56,902.74 is: 78,488.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,953.34 : 125,455.47 = 56,902.74 : x
  2. Step 2: Convert to fraction form
    90,953.34/125,455.47 = 56,902.74/x
  3. Step 3: Cross multiply
    90,953.34x = 125,455.47 × 56,902.74
  4. Step 4: Simplify right side
    90,953.34x = 7,138,759,990.99
  5. Step 5: Solve for x
    x = 7,138,759,990.99/90,953.34
  6. Step 6: Final answer
    x = 78,488.16

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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.