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Finding the Fourth Proportional to 76,130.96, 105,064.34 and 43,870.40

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Solution

The fourth proportional to 76,130.96, 105,064.34 and 43,870.40 is: 60,543.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,130.96 : 105,064.34 = 43,870.40 : x
  2. Step 2: Convert to fraction form
    76,130.96/105,064.34 = 43,870.40/x
  3. Step 3: Cross multiply
    76,130.96x = 105,064.34 × 43,870.40
  4. Step 4: Simplify right side
    76,130.96x = 4,609,214,621.54
  5. Step 5: Solve for x
    x = 4,609,214,621.54/76,130.96
  6. Step 6: Final answer
    x = 60,543.24

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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.