Home / 70,225.28-105,376.80-42,076.16

Finding the Fourth Proportional to 70,225.28, 105,376.80 and 42,076.16

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Solution

The fourth proportional to 70,225.28, 105,376.80 and 42,076.16 is: 63,137.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,225.28 : 105,376.80 = 42,076.16 : x
  2. Step 2: Convert to fraction form
    70,225.28/105,376.80 = 42,076.16/x
  3. Step 3: Cross multiply
    70,225.28x = 105,376.80 × 42,076.16
  4. Step 4: Simplify right side
    70,225.28x = 4,433,851,097.09
  5. Step 5: Solve for x
    x = 4,433,851,097.09/70,225.28
  6. Step 6: Final answer
    x = 63,137.54

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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.