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Finding the Fourth Proportional to 56,900.80, 78,510.54 and 33,013.64

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Solution

The fourth proportional to 56,900.80, 78,510.54 and 33,013.64 is: 45,551.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,900.80 : 78,510.54 = 33,013.64 : x
  2. Step 2: Convert to fraction form
    56,900.80/78,510.54 = 33,013.64/x
  3. Step 3: Cross multiply
    56,900.80x = 78,510.54 × 33,013.64
  4. Step 4: Simplify right side
    56,900.80x = 2,591,918,703.77
  5. Step 5: Solve for x
    x = 2,591,918,703.77/56,900.80
  6. Step 6: Final answer
    x = 45,551.53

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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.