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Finding the Fourth Proportional to 92,805.30, 128,071.58 and 56,994.93

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Solution

The fourth proportional to 92,805.30, 128,071.58 and 56,994.93 is: 78,653.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,805.30 : 128,071.58 = 56,994.93 : x
  2. Step 2: Convert to fraction form
    92,805.30/128,071.58 = 56,994.93/x
  3. Step 3: Cross multiply
    92,805.30x = 128,071.58 × 56,994.93
  4. Step 4: Simplify right side
    92,805.30x = 7,299,430,452.11
  5. Step 5: Solve for x
    x = 7,299,430,452.11/92,805.30
  6. Step 6: Final answer
    x = 78,653.16

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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.