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Finding the Fourth Proportional to 70,039.95, 96,655 and 38,208.84

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Solution

The fourth proportional to 70,039.95, 96,655 and 38,208.84 is: 52,728.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,039.95 : 96,655 = 38,208.84 : x
  2. Step 2: Convert to fraction form
    70,039.95/96,655 = 38,208.84/x
  3. Step 3: Cross multiply
    70,039.95x = 96,655 × 38,208.84
  4. Step 4: Simplify right side
    70,039.95x = 3,693,075,430.20
  5. Step 5: Solve for x
    x = 3,693,075,430.20/70,039.95
  6. Step 6: Final answer
    x = 52,728.13

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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.