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Finding the Fourth Proportional to 48,235.88, 66,420.86 and 40,264.40

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Solution

The fourth proportional to 48,235.88, 66,420.86 and 40,264.40 is: 55,444.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,235.88 : 66,420.86 = 40,264.40 : x
  2. Step 2: Convert to fraction form
    48,235.88/66,420.86 = 40,264.40/x
  3. Step 3: Cross multiply
    48,235.88x = 66,420.86 × 40,264.40
  4. Step 4: Simplify right side
    48,235.88x = 2,674,396,075.38
  5. Step 5: Solve for x
    x = 2,674,396,075.38/48,235.88
  6. Step 6: Final answer
    x = 55,444.12

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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.