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Finding the Fourth Proportional to 56,049.51, 77,348.92 and 30,899.91

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Solution

The fourth proportional to 56,049.51, 77,348.92 and 30,899.91 is: 42,642.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,049.51 : 77,348.92 = 30,899.91 : x
  2. Step 2: Convert to fraction form
    56,049.51/77,348.92 = 30,899.91/x
  3. Step 3: Cross multiply
    56,049.51x = 77,348.92 × 30,899.91
  4. Step 4: Simplify right side
    56,049.51x = 2,390,074,666.60
  5. Step 5: Solve for x
    x = 2,390,074,666.60/56,049.51
  6. Step 6: Final answer
    x = 42,642.20

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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.