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Finding the Fourth Proportional to 55,848.80, 77,070.48 and 30,697.76

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Solution

The fourth proportional to 55,848.80, 77,070.48 and 30,697.76 is: 42,362.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,848.80 : 77,070.48 = 30,697.76 : x
  2. Step 2: Convert to fraction form
    55,848.80/77,070.48 = 30,697.76/x
  3. Step 3: Cross multiply
    55,848.80x = 77,070.48 × 30,697.76
  4. Step 4: Simplify right side
    55,848.80x = 2,365,891,098.12
  5. Step 5: Solve for x
    x = 2,365,891,098.12/55,848.80
  6. Step 6: Final answer
    x = 42,362.43

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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.