Home / 66,931.28-100,346.98-40,271.02

Finding the Fourth Proportional to 66,931.28, 100,346.98 and 40,271.02

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Solution

The fourth proportional to 66,931.28, 100,346.98 and 40,271.02 is: 60,376.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,931.28 : 100,346.98 = 40,271.02 : x
  2. Step 2: Convert to fraction form
    66,931.28/100,346.98 = 40,271.02/x
  3. Step 3: Cross multiply
    66,931.28x = 100,346.98 × 40,271.02
  4. Step 4: Simplify right side
    66,931.28x = 4,041,075,238.52
  5. Step 5: Solve for x
    x = 4,041,075,238.52/66,931.28
  6. Step 6: Final answer
    x = 60,376.48

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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.