Home / 72,054.23-99,434.72-40,223.12

Finding the Fourth Proportional to 72,054.23, 99,434.72 and 40,223.12

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Solution

The fourth proportional to 72,054.23, 99,434.72 and 40,223.12 is: 55,507.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,054.23 : 99,434.72 = 40,223.12 : x
  2. Step 2: Convert to fraction form
    72,054.23/99,434.72 = 40,223.12/x
  3. Step 3: Cross multiply
    72,054.23x = 99,434.72 × 40,223.12
  4. Step 4: Simplify right side
    72,054.23x = 3,999,574,278.11
  5. Step 5: Solve for x
    x = 3,999,574,278.11/72,054.23
  6. Step 6: Final answer
    x = 55,507.84

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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.