Home / 72,268.29-99,730.35-40,437.21

Finding the Fourth Proportional to 72,268.29, 99,730.35 and 40,437.21

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Solution

The fourth proportional to 72,268.29, 99,730.35 and 40,437.21 is: 55,803.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,268.29 : 99,730.35 = 40,437.21 : x
  2. Step 2: Convert to fraction form
    72,268.29/99,730.35 = 40,437.21/x
  3. Step 3: Cross multiply
    72,268.29x = 99,730.35 × 40,437.21
  4. Step 4: Simplify right side
    72,268.29x = 4,032,817,106.32
  5. Step 5: Solve for x
    x = 4,032,817,106.32/72,268.29
  6. Step 6: Final answer
    x = 55,803.41

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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.