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Finding the Fourth Proportional to 70,485.61, 97,261.18 and 40,272.89

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Solution

The fourth proportional to 70,485.61, 97,261.18 and 40,272.89 is: 55,571.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,485.61 : 97,261.18 = 40,272.89 : x
  2. Step 2: Convert to fraction form
    70,485.61/97,261.18 = 40,272.89/x
  3. Step 3: Cross multiply
    70,485.61x = 97,261.18 × 40,272.89
  4. Step 4: Simplify right side
    70,485.61x = 3,916,988,803.41
  5. Step 5: Solve for x
    x = 3,916,988,803.41/70,485.61
  6. Step 6: Final answer
    x = 55,571.47

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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.