Home / 42,803.20-64,277.70-28,077.40

Finding the Fourth Proportional to 42,803.20, 64,277.70 and 28,077.40

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Solution

The fourth proportional to 42,803.20, 64,277.70 and 28,077.40 is: 42,163.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,803.20 : 64,277.70 = 28,077.40 : x
  2. Step 2: Convert to fraction form
    42,803.20/64,277.70 = 28,077.40/x
  3. Step 3: Cross multiply
    42,803.20x = 64,277.70 × 28,077.40
  4. Step 4: Simplify right side
    42,803.20x = 1,804,750,693.98
  5. Step 5: Solve for x
    x = 1,804,750,693.98/42,803.20
  6. Step 6: Final answer
    x = 42,163.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.