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Finding the Fourth Proportional to 70,009,823.60, 105,014,735.40 and 60,572,639.60

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Solution

The fourth proportional to 70,009,823.60, 105,014,735.40 and 60,572,639.60 is: 90,858,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,009,823.60 : 105,014,735.40 = 60,572,639.60 : x
  2. Step 2: Convert to fraction form
    70,009,823.60/105,014,735.40 = 60,572,639.60/x
  3. Step 3: Cross multiply
    70,009,823.60x = 105,014,735.40 × 60,572,639.60
  4. Step 4: Simplify right side
    70,009,823.60x = 6,361,019,720,073,562
  5. Step 5: Solve for x
    x = 6,361,019,720,073,562/70,009,823.60
  6. Step 6: Final answer
    x = 90,858,959.40

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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.