Home / 85,549,600.90-128,355,894.15-28,043,748.10

Finding the Fourth Proportional to 85,549,600.90, 128,355,894.15 and 28,043,748.10

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Solution

The fourth proportional to 85,549,600.90, 128,355,894.15 and 28,043,748.10 is: 42,075,945.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,549,600.90 : 128,355,894.15 = 28,043,748.10 : x
  2. Step 2: Convert to fraction form
    85,549,600.90/128,355,894.15 = 28,043,748.10/x
  3. Step 3: Cross multiply
    85,549,600.90x = 128,355,894.15 × 28,043,748.10
  4. Step 4: Simplify right side
    85,549,600.90x = 3,599,580,362,692,864
  5. Step 5: Solve for x
    x = 3,599,580,362,692,864/85,549,600.90
  6. Step 6: Final answer
    x = 42,075,945.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.