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Finding the Fourth Proportional to 94,905, 130,971.06 and 61,429.32

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Solution

The fourth proportional to 94,905, 130,971.06 and 61,429.32 is: 84,773.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,905 : 130,971.06 = 61,429.32 : x
  2. Step 2: Convert to fraction form
    94,905/130,971.06 = 61,429.32/x
  3. Step 3: Cross multiply
    94,905x = 130,971.06 × 61,429.32
  4. Step 4: Simplify right side
    94,905x = 8,045,463,155.48
  5. Step 5: Solve for x
    x = 8,045,463,155.48/94,905
  6. Step 6: Final answer
    x = 84,773.86

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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.