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Finding the Fourth Proportional to 55,798.64, 77,001.72 and 30,647.60

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Solution

The fourth proportional to 55,798.64, 77,001.72 and 30,647.60 is: 42,293.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,798.64 : 77,001.72 = 30,647.60 : x
  2. Step 2: Convert to fraction form
    55,798.64/77,001.72 = 30,647.60/x
  3. Step 3: Cross multiply
    55,798.64x = 77,001.72 × 30,647.60
  4. Step 4: Simplify right side
    55,798.64x = 2,359,917,913.87
  5. Step 5: Solve for x
    x = 2,359,917,913.87/55,798.64
  6. Step 6: Final answer
    x = 42,293.47

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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.