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Finding the Fourth Proportional to 94,912, 130,980.84 and 61,436.32

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Solution

The fourth proportional to 94,912, 130,980.84 and 61,436.32 is: 84,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,912 : 130,980.84 = 61,436.32 : x
  2. Step 2: Convert to fraction form
    94,912/130,980.84 = 61,436.32/x
  3. Step 3: Cross multiply
    94,912x = 130,980.84 × 61,436.32
  4. Step 4: Simplify right side
    94,912x = 8,046,980,800.11
  5. Step 5: Solve for x
    x = 8,046,980,800.11/94,912
  6. Step 6: Final answer
    x = 84,783.60

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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.