Home / 76,510.36-105,583.74-42,976.60

Finding the Fourth Proportional to 76,510.36, 105,583.74 and 42,976.60

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Solution

The fourth proportional to 76,510.36, 105,583.74 and 42,976.60 is: 59,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,510.36 : 105,583.74 = 42,976.60 : x
  2. Step 2: Convert to fraction form
    76,510.36/105,583.74 = 42,976.60/x
  3. Step 3: Cross multiply
    76,510.36x = 105,583.74 × 42,976.60
  4. Step 4: Simplify right side
    76,510.36x = 4,537,630,160.48
  5. Step 5: Solve for x
    x = 4,537,630,160.48/76,510.36
  6. Step 6: Final answer
    x = 59,307.40

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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.