Home / 72,539.06-100,104.51-40,715.48

Finding the Fourth Proportional to 72,539.06, 100,104.51 and 40,715.48

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Solution

The fourth proportional to 72,539.06, 100,104.51 and 40,715.48 is: 56,187.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539.06 : 100,104.51 = 40,715.48 : x
  2. Step 2: Convert to fraction form
    72,539.06/100,104.51 = 40,715.48/x
  3. Step 3: Cross multiply
    72,539.06x = 100,104.51 × 40,715.48
  4. Step 4: Simplify right side
    72,539.06x = 4,075,802,674.29
  5. Step 5: Solve for x
    x = 4,075,802,674.29/72,539.06
  6. Step 6: Final answer
    x = 56,187.70

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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.