Home / 76,653.13-105,784.37-42,663.05

Finding the Fourth Proportional to 76,653.13, 105,784.37 and 42,663.05

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Solution

The fourth proportional to 76,653.13, 105,784.37 and 42,663.05 is: 58,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,653.13 : 105,784.37 = 42,663.05 : x
  2. Step 2: Convert to fraction form
    76,653.13/105,784.37 = 42,663.05/x
  3. Step 3: Cross multiply
    76,653.13x = 105,784.37 × 42,663.05
  4. Step 4: Simplify right side
    76,653.13x = 4,513,083,444.26
  5. Step 5: Solve for x
    x = 4,513,083,444.26/76,653.13
  6. Step 6: Final answer
    x = 58,876.70

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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.