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Finding the Fourth Proportional to 105,368.83, 145,408.98 and 57,622.21

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Solution

The fourth proportional to 105,368.83, 145,408.98 and 57,622.21 is: 79,518.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,368.83 : 145,408.98 = 57,622.21 : x
  2. Step 2: Convert to fraction form
    105,368.83/145,408.98 = 57,622.21/x
  3. Step 3: Cross multiply
    105,368.83x = 145,408.98 × 57,622.21
  4. Step 4: Simplify right side
    105,368.83x = 8,378,786,781.45
  5. Step 5: Solve for x
    x = 8,378,786,781.45/105,368.83
  6. Step 6: Final answer
    x = 79,518.65

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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.