Home / 72,036.64-99,402.24-40,206.40

Finding the Fourth Proportional to 72,036.64, 99,402.24 and 40,206.40

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Solution

The fourth proportional to 72,036.64, 99,402.24 and 40,206.40 is: 55,480.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,036.64 : 99,402.24 = 40,206.40 : x
  2. Step 2: Convert to fraction form
    72,036.64/99,402.24 = 40,206.40/x
  3. Step 3: Cross multiply
    72,036.64x = 99,402.24 × 40,206.40
  4. Step 4: Simplify right side
    72,036.64x = 3,996,606,222.34
  5. Step 5: Solve for x
    x = 3,996,606,222.34/72,036.64
  6. Step 6: Final answer
    x = 55,480.19

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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.