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Finding the Fourth Proportional to 70,001.20, 105,001.80 and 36,708.40

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Solution

The fourth proportional to 70,001.20, 105,001.80 and 36,708.40 is: 55,062.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,001.20 : 105,001.80 = 36,708.40 : x
  2. Step 2: Convert to fraction form
    70,001.20/105,001.80 = 36,708.40/x
  3. Step 3: Cross multiply
    70,001.20x = 105,001.80 × 36,708.40
  4. Step 4: Simplify right side
    70,001.20x = 3,854,448,075.12
  5. Step 5: Solve for x
    x = 3,854,448,075.12/70,001.20
  6. Step 6: Final answer
    x = 55,062.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.