Home / 105,430.43-145,497.62-57,683.77

Finding the Fourth Proportional to 105,430.43, 145,497.62 and 57,683.77

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Solution

The fourth proportional to 105,430.43, 145,497.62 and 57,683.77 is: 79,605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,430.43 : 145,497.62 = 57,683.77 : x
  2. Step 2: Convert to fraction form
    105,430.43/145,497.62 = 57,683.77/x
  3. Step 3: Cross multiply
    105,430.43x = 145,497.62 × 57,683.77
  4. Step 4: Simplify right side
    105,430.43x = 8,392,851,247.63
  5. Step 5: Solve for x
    x = 8,392,851,247.63/105,430.43
  6. Step 6: Final answer
    x = 79,605.59

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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.