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Finding the Fourth Proportional to 56,337.80, 77,746.74 and 31,186.76

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Solution

The fourth proportional to 56,337.80, 77,746.74 and 31,186.76 is: 43,038.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,337.80 : 77,746.74 = 31,186.76 : x
  2. Step 2: Convert to fraction form
    56,337.80/77,746.74 = 31,186.76/x
  3. Step 3: Cross multiply
    56,337.80x = 77,746.74 × 31,186.76
  4. Step 4: Simplify right side
    56,337.80x = 2,424,668,921.16
  5. Step 5: Solve for x
    x = 2,424,668,921.16/56,337.80
  6. Step 6: Final answer
    x = 43,038.05

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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.