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Finding the Fourth Proportional to 70,412.58, 105,482.77 and 39,153.06

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Solution

The fourth proportional to 70,412.58, 105,482.77 and 39,153.06 is: 58,653.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,412.58 : 105,482.77 = 39,153.06 : x
  2. Step 2: Convert to fraction form
    70,412.58/105,482.77 = 39,153.06/x
  3. Step 3: Cross multiply
    70,412.58x = 105,482.77 × 39,153.06
  4. Step 4: Simplify right side
    70,412.58x = 4,129,973,222.78
  5. Step 5: Solve for x
    x = 4,129,973,222.78/70,412.58
  6. Step 6: Final answer
    x = 58,653.91

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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.